Sighting telescope



May 15, 1956 SEARCHROOM Jul/entan- United States Patent SIGHTING TELESCOPE Paul Kohler, Berlin, Germany, assignor to Pecar Fabrikation von Zielfernrohren und Feldstechern Paul Kohler & Co., Berlin, Germany, a German firm Application May 5, 1953, Serial No. 353,098

Claims priority, application Germany January 13, 1953 4 Claims. (CI. 33-50) The present invention relates to sighting or aiming telescopes. It is already known to provide adjustable sighting marks in sighting telescopes serving as view finder, said sighting marks being adjustable either in one direction only or in two directions arranged rectangularly to each other.

The adjustment is made by adjusting screws provided on the sighting telescope and by correspondingly formed carriage guides allowing simultaneously an adjustment in the horizontal as well as in the vertical direction if two directions of adjustment are possible.

Sighting telescopes with such sighting marks are already known.

When shooting with gun sighting telescopes generally different sighting marks are used in dependency of the respective light conditions and, if required, of the kind of deer to be chased and the like. About fourteen different kinds of sighting marks have been developed which are used in the hunt. If a shooter wishes to use the different sighting marks he is forced to carry with him a corresponding number of gun sighting telescopes each being provide with another sighting mark.

This is necessary as in the known sighting telescope the sighting marks are firmly mounted in the sighting telescope and can only be removed and substituted by another sighting mark if the sighting telescope is fully disassembled.

As, however, such operation can only be made in the factory a corresponding number of sighting telescopes must be at disposal each of which being provided with another mark.

The present invention intends to remove this disadvantage arising from the necessity to provide a number of sighting telescopes corresponding to the number of sighting marks.

According to the invention this will be achieved thereby that the sighting mark together with the organs serving for adjusting it is formed as an exchangeable closed unit removable without disassembling the telescope.

Thereby it is possible to use selectively one and the same sighting telescope with different sighting marks. A shooter only requires one sole sighting telescope and a corresponding number of sighting marks which he may insert into the sighting telescope selectively.

A further advantage of the invention consists therein that all sighting marks may be tried in the gun sighting telescope one after the other so that they are at disposal in a tried state.

To allow an easy mounting and dismounting of the sighting mark, it is arranged, according to the invention, together with its adjusting organs, on a mounting plate adapted to the circumference of the sighting telescope and partially embracing it, while the cylindrical portion of the sighting telescope is provided with a suitable transverse slot allowing the sighting mark to pass. The mounting plate is fastened on the sighting telescope suitably by three preferably countersunk screws serving simultaneously for adjusting said mounting plate. To warrant freedom from parallax when using each of the sighting marks, the adjustment bores on the sighting telescope and the sighting marks on the mounting plates are dimensioned and arranged suchwise that, when assembled, the axis of the used aiming element, e. g. the aiming pin or the cross lines, is positioned in the plane of the focus of the optics.

To prevent entering of moisture and rain between the mounting plate and the sighting telescope into the sighting telescope and, through the slot, into the interior of the sighting telescope, according to the invention, a packing is provided between the mounting plate and the sighting telescope, said packing being adapted to be tightened by the adjusting screws.

The construction and arrangement of the sighting mark on a mounting plate according to the invention allows a simple assemblage and disassemblage and any desired easy exchange of the sighting marks being present in the sighting telescope by the gun-smith or the shooter himself.

To prevent an unintended turning of the screws serving for adjusting the sighting marks and arranged on the mounting plate, cap screws are provided which screws simultaneously prevent the moisture and rain to enter.

For the purpose of protecting the constructional elements if removed from the sighting telescope, according to the invention, a protecting sleeve is provided corresponding to the circumference of the sighting telescope and being provided with a corresponding slot for the sighting mark.

At the one front end this sleeve a glass disk is provided while at the other front side a magnifying lens is arranged allowing the sighting mark to be inspected so that the required sighting mark can positively be ascertained before it is inserted into the sighting telescope.

The drawing shows by way of example an embodiment of the invention.

Fig. 1 is a perspective view of a sighting telescope according to the invention,

Fig. 2 shows the element to be inserted provided with the sighting mark ring,

Fig. 3 shows a protecting sleeve for the sighting mark ring, and

Fig. 4 is a perspective view of the mounting plate with the sighting mark ring.

According to Fig. 1 the sighting telescope 1 is provided with an objective 2 and an eye piece 3 which may be focussed by the fluted ring 4.

Near the focus of the objective 2 the sighting telescope is provided with a slot 5 directed transverse to the axis of the sighting telescope and with adjusting bores 6.

The sighting mark ring 7 and its adjusting organs 8 are attached to a mounting plate 9 formed like a cylinder segment having a diameter corresponding to the outer diameter of the telescope 1.

At the mounting plate 9 countersunk bores 10 are provided, adapted to receive the fastening screws engaging the adjusting bores 6 of the sighting telescope thus adjusting the mounting plate 9 with the sighting mark ring relatively to the sighting telescope 1 and simultaneously connecting the said two members with each other, thereby compressing a rubber packing 11 inserted between the mounting plate 9 and the sighting telescope and preventing entering of moisture and rain.

The adjusting bores in the sighting telescope 1 and the sighting mark ring 7 on the mounting plate 9 are arranged so that the axis of the aiming element, e. g. the aiming pin 12 lies in the plane of the focus of the optics 2.

If the mounting plate 9 is removed from the sighting telescope 1 it is put on the protecting pipe 13 which is also provided with a slot 14 for receiving the sighting mark ring 7. The mounting plate is fastened to the protecting pipe suitably by screws inserted into the bores 10.

At the one front side the protecting pipe 13 has attached to it a glass disk 15 and at the other front side a magnifying lense 16 allowing an exact observation of the aiming pin 12 being in the protecting pipe 13.

The adjusting organs 8 of the sighting mark ring 7 are provided with cap screws 17 screwed onto the mounting plate thereby preventing the organs 9 from being adjusted by chance. The arrangement of the caps screws 17 may be seen from Figs. 2 and 4. The adjusting organs 8 pass through screw sleeves 18 and engage the sighting mark ring 7 for performing its adjustment in the respective direction.

What I claim is:

1. A telescopic gun sight with selectively interchangee able sighting marks comprising a" telescope having a side opening in the barrel thereof and a plurality of different adjustable sighting mark assemblies adapted for interchangeable mounting on the telescope, each of said sighting mark assemblies comprising a mounting plate shaped to conform to the contour of the barrel of the telescope to seat thereon and manually adjustable sighting marks mounted on said plate so as to project through the opening in the barrel of the telescope when the mounting plate is seated thereon, the telescope barrel and each of the respective mounting plates having holes therein for the reception of fastening means to secure a selected sighting mark assembly in correctly adjusted operative position on the barrel, the sighting marks of different types being so positioned upon their respective mounting plates that when a selected assembly is mounted on the telescope and fastened to the barrel thereof the sighting elements will lie in the focal plane of the telescope lens, whereby to attain quick interchangeability of the respective sighting mark assemblies with freedom of parallax cf the variously formed sighting marks thereof.

2. A telescopic gun sight with selectively interchangeable sighting mark assemblies according to claim 1, characterized in that at least one of the attaching holes and related fastener serves as position adjusting means.

3. A telescopic gun sight with selectively interchangeable sighting mark assemblies according to claim 1, characterized in that a resilient packing gasket is positioned between the barrel of the telescope and the respective mounting plate to form a watertight joint therebetween.

4. In a telescopic gun sight with interchangeable sighting mark assemblies according to claim 1, an associated carrier tube separate from but of the same outside diamcter as the barrel of the telescope and having a side opening therein for reception of the sighting marks of an assembly detached from the telescope and mounted on said carrier tube, said carrier tube having a magnifying lens in one end thereof for viewing the sighting marks of an assembly carried thereby to facilitate selection of a desired sighting mark assembly for mounting on the telescope.

References Cited in the file of this patent UNITED STATES PATENTS Fahrenwald Mar. 13, 1934 Loomis June 6, 1939 Case Nov. 30, 1948 Rotter Sept. 19, 1950 Ford Dec. 11, 1951 

